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How to Whiten Your Teeth at Home with Clear Retainers or Invisalign Trays

How to Whiten Your Teeth at Home with Clear Retainers or Invisalign Trays

Are you looking for an effective way to brighten your smile from the comfort of your home? Dr. Robert Passamano, a board-certified orthodontist, shares a simple and safe method for teeth whitening using custom trays, such as clear retainers or Invisalign trays.

What You Need:

  • Custom Tray: Utilize your custom clear retainer or Invisalign tray.
  • Teeth Whitening Gel: Opt for a 10% carbamide peroxide gel for overnight whitening.
  • Brush: Have a toothbrush handy for cleaning up any residual  gel.

How to Whiten:

  1. Start with a clean slate by brushing and flossing your teeth to remove food particles.
  2. Apply a small drop of whitening gel only to the front surfaces of your teeth; optional to whiten the back molars if you have a wide smile.
  3. Insert the tray in front of a mirror to ensure the gel stays on your teeth and doesn’t touch your gums (LOOK at the gel).
  4. Wipe off any excess gel that extends onto your gums with your finger.
  5. The duration of whitening depends on the gel’s concentration. With 10% carbamide peroxide, overnight use is ideal.

Tips and FAQs:

  • To maintain your results, avoid hot or cold beverages like coffee, tea, or orange juice immediately after whitening.
  • Teeth with attachments during Invisalign treatment may not respond well to whitening due to gel limitations.
  • Dental crowns and fillings do not whiten, so the focus should be on natural teeth.
  • Reduce sensitivity by whitening consistently over several weeks, rather than all at once.
  • One syringe of gel can generally provide about four uses.


Expect noticeable whitening within about a month of consistent use, resulting in a brighter and more confident smile.

With these tips and Dr. Passamano’s guidance, you can embark on your teeth-whitening journey from the comfort of your home. Remember to practice patience and consistency for the best results. Enjoy your radiant smile!

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